Multiple spring.



11.8. GRACE. MULTIPLE SPRING. APPLIOATION FILED AUG.4, 1913.

Patented Jan. 12 1915;

Q4 A I Imam/2hr. was 17% Wan J. Gra'ce,

"H. 6. MM 5 v V 1,125,016. Original application filed February 5,

To all whom it may concern Be it known that I, HENRY 'S. GRACE, acitizen of the United States, residing in the city and county of San Francisco, State of California, have inventedcertain new and useful Improvements in Multiple Springs, of which the following is a specification.

y invention relates to springs for use in resihent wheels, or in other situations, for instance, for supportin floors or other bodies which it is desirec? to provide with a certain amount of resilience, and it may be applied to car platforms, the floors of cattle cars, and other situations, ;,;Theform of sprin is disclosed substantially in'" appiica tion' or Letters Patent filed by me in, the United States Patent Oflic'e, ebruary 5, 1913, Serial No. 746,363. g Y

The invention consists in the features of construction and arrangement of arts hereinafter described and particular y pointed out in the claim.

In the accompanying drawings, Figure 1 is a perspective view of one unit or member of the spring. Fig. 2is a perspective view showing the number of unlts assembled to make up the complete spring, and Fig. 3 is an edge or side view of several units indicating their relative positions when assembled to form the spring though said units are separated from each other for clearness of illustration.

As shown in Fig. 1, the spring unit consists of a leaf of metal bent into a general bow shape with its ends turned outwardly and curved slightl reversely to the curved bow portion at 1. he end portions are also thin or tapered down at 2 to an ed e.

Fi (2 represents a number 0 units as semb ed to form the spring, and it will be observed that these units-are staggered in relation to each other, the lowermost units terminatin at the oint A, where their thin .edges over ap, an the next unit at this camronnm, nssrenon or SAN rnnncrsco, CALIFORNIA.

MULTIPLE SPRING.

Specification of Letters Patent.

1918 serial No. 746,368. Divided end portions terminate a spring is provided and 'ing a main ad acent overlap ONE-HALF 'ro Patented Jan.'12, 1915.

4, 1913. Serial No. 782,967.

point above the lowermost unit has its bow portion 1n line with the oint A, while its ove the bow portlons of the lowermost units and here-overlap the ends of other units, and the bow port1ons of these last mentioned units extend 1g. '1 some" arranged with their bow portions irected downwardly and others with their bow ortions directed up wardly, the ends of a acent units overlapping each other and the bow portion of one unit extending past or 1 ing adjacent to the overlapping ends of, t e units above or below. I

By theconstruction illustrated a compact one in which- .the overlapping ends will have a certain amount of slidlng movement, one on the other, witho' ut necessitating the employment of any sectlons other than a multiplication of the standard unit and not re uiring clearance spaces between the ends 0 the units. The whole spring is made up of a number of like units overlapping at certain points and havand this application med August ing, their main bow portions-directed difierently. I i

I claim as my invention:

spring of regular undulatory shape comprising a series of units, each unit havbow portion and ends curving reversely to the main bow ortion, each projection and depression 0 said undulatory spring being composed of a bow portion and ing ends of said units arranged alternate Y In testimonfy w ereof, I aflix my signature in presence 0 two witnesses. v

HENRY S. GRACE. Witnesses: r

H. GARDNER, W. A. HENRY. l 

